Michail margulib



' PATEHTBD APR. 7, 1908.

ll. IABGULIS. AUGUHULATOR PLATE.

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MICHAIL MARGULIS, OF ODESSA, RUSSIA.

AGGUHULATOB-PLATE.

No. mp2s.

Specification 02 Letters Patent.

Patented April 7, 1908.

Application filed June 7, 1907. Scrlal No. 377,821.

To all whom it may concern:

Be it known that I, Mronsn. Maneoms, a subject of the Emperor of Russia, residing at 12 Puschkinskaja, Odessa, in the Em ire of Russia, have invented a new and use to (simulator-Plate, of which the following is a specificatlon.

In place of the old accumulator-plates having active material introduced into them other accumulator-plates have already been employed, on which great surfaces were produced by cutting them with tools in a certain manner, so that they could be at once formed. -Such accumulator plates, although superior to the old plates for various reasons,

et presented various defects, the chief deects being, that particularly the positive plates were subjected to distortions due to extension and contraction during the for mation or charge and the discharge respectively, which distortions easily produced short circuits. The known accumulatorplates comprising a frame and a pluralit of oose alternately strips are not sub to to distortions, it is true, but they present other defects. Either the extension of the lead stri s during the formation or charge forced tem with the frame outwards, so that the width of the plates was as a rule increased on certain places, which in view of the restricted space at disposal for the plates was objectionable; or, if the frame was made suflicientl strong to prevent the lead strips from ben log out, the several strips were so much compressed as to reduce the spaces between them and to increase their surfaces in contact with one another and consequently to diminish their active surfaces, in other words to reduce the ca acrty of the accumulator-plate.

y invention relates to improvements in Such accumulator- )latcs, whereby the said defects are avoide The objects of my improvement are, first, to emfploy a rigid head-piece of lead in place of a ame; second, to suspend the several alternatel straight and wavy lead strips fgom the cadpiece; third, to provide elastic ressure strips which are suspended from the cad-piece and are adapted to yieldingly compress the straight and wavy lead strips; and, fourth, to

sure strips.

I will now proceed to describe my invenai ht and wavy cad provide a plurality of cross rods for connecting together the elastic prestion with reference drawing, in which-- re 1 is an elevation of the accumulatorp ate, a part of the straight and wavy lead strips beingsomitted to show the connecting cross ro Fig. 2 is a horizontal sec tion through the same on the line A A in Fig. 1, Fig. 3 is a vertical cross section throu h the same on the line BB in Fig. l and s ows a strai ht lead strip, Fig. 4 IS a similar section shows a wavy lead strip, and F' 5 is a horizontal section similar to 2, 1n which the straight lead strips are 10 'tudinally corrugated.

nnilar characters of reference refer to similar parts throughout the several views.

Instead of a frame as in known accumulator-plates I employ a rigid head-piece 3 of lead and provide it with suitable supporti projections 4-4. From the head-piece 3 suspend the known series of straight lead strips 1, l and wavy lead strips 2, 2, which strips alternate with one another and bear on eac other, so that spaces are left between them, as is clearly shown at Fig. 1. These lead strips 1, 1 and 2, 2 may be fastened with their upper ends on the head-piece 3 in any own manner, for example by soldering. At the ends of the head-piece 3 I provide two pressure strips 5, 5, to ailord lateral su port or the electrode strips 1, 1 and 2, 2; an said pressure stri B may be made in one piece with the hen piece 3 or may be rigidly connected therewith in any known manner. As is clearly shown in F' 1, the two pressure strips 5, 5 are each divided into several (here five) sections, which are bent inwards. They are preferably connected together by means of several (here six) cross rods 6, 6 of hard lead or an .other suitable material, which rods are s own as provided at their ends with beads for hearing on the pressure strips 5, 5. However, the ends of the rods 6, 6 may also be secured on the supporting strips 5, 5 in any other known manner. The rods 6, 6 are made to of strai ht and wavy lead strips 1, 1 and 2, 2. Preferalily the straight lead strips 1, l are provided with lengthy slots 7, 7 so as to ermit the rods 6, 6 to vertically move in t lei! slots, when they extend during the formation or char e of the eccul'nuIawr-plate and contract uring the discharge of the latter. The wav lead strips 2, '3 are on the contrary, provider with circular holes 8, 8 which more to the accompanying pass through the series' cumulat0r late remains contact with one another'and co or less closely fit the rods 6, 6, so that the strips 2, 2 may rest on the latter and be thereby supported, since they are b reason of their she. e permitted to extem and to contract free y. It is obvious, that the bent parts of the two lpressure strips 5, 5 are elastlc so that they wil more or less bend outwards, in other words they will be more or less straightened, if during the formation or charge of the accumIflator-pla-te the several lead strips 1, 1 and 2, 2 extend in the honzontal direction. The elastic strips 5 may be made of hard lead, of hard rubber or also of other material, especially of metal. When durin the discharge of the accumulatorplate he lead strips 1, l and 2, 2 contract, of course the pressure stri s 5, 5 will resume their original 'sna e. bus the series of straight and wavy cad strips 1, 1 and 2, 2 is errmtted to extend and to contract in the orizontal direction, while the length of the rods 6, 6 and c insequently also of the acra-ct-ically constant. It is also evident, t at the areas of the spaces between the several straight and wavy lead strips 1, l and 2, 2 will remain practically constant during the vertical extension and contraction of the accumulatorplate, so that no strains will be produced in the active material within the said spaces. The oval shape of the holes 7, 7 in the straight lead strips 1, 1 permits the latter to extend and to contract ind pendentl of the pressure strips 5, 5. s so prc erred, also the wavy lead stri s 2, may be provided with oval slots si ar to those 1? Tr instead of the circular holes 8, 8, so as to permit the cross rods 6, 6 to freely move in the vertical direction. The rods 6, 6 may move in the said direction. either wholly or artially at the ends, in which latter case t ey are more or less bent downwards. In all cases the accumulator-plate is protected from distortions, so that the several accumulator-plates contained in a cell can not possibly come in uently no short circuits can be produc The several accumulator-plates will sim 1y extend and contract in the vertical direction during their formation or charge and discharge respectively without produc' any evil efiects. The width of the acculiiiilator I plate is revented from v As a ready explained ailh o e, during the extension and contraction of the accumulator-plate the areas of the several spaces between the straight and wavy lead strips 1, 1 and 2, 2 will remain ractically constant, so that the surfaces 0 contact between the several strips will also remain constant, which means that the active surface of the accumulator plate will remain practically constant and consequently also its capacity during the formation or charge and the discharge. This is a great advantage of the new accumulator-plate in opposition to the known accumulatorlatcs.

The even straight earl strips I, l hitherto shown may be replaced by longitudinally corrugated straight lead strips 1, I if so preferre as is shown in Fip. 5. Thereby of course the active surface 0 the accumulatorplate and hence its ca iacity will be increased.

he even straiht lea strips 1, 1 may also be replaced by ot ierwise shaped lead strips for attaining a similar efl'ect.

The accumulator-plate may be varied in man res ects withm the'scope of the a)- pen ed c aims without departing from t e spirit of my invention.

I claim:

1. An accumulator-plate consisting of a headpiece, a plurality of alternately straight and wavy lead strips suspended from the head-piece and provided with holes, a pluraljfiy of pressure strips suspended from the he piece and adapted to yieldingly compress the straight and wavy lead strips in the orizontal direction, and a plurality of hori. zontal cross rods passing through the holes of the straight and wavy lead strips and adapted to connect together the ressure strips.

2. In an accumulatorlate the combination with a head-piece, o? a plurality of vertical alternately straight and wavy lead strips secured with their up er ends on said headpiece and provided with holes, a plurality of elastic pressure strips suspended from said head-piece and adapted to yieldingly compress said strai 'ht and we lead strips in the horizontal direction, an a plurality of cross rods assing through the holes of said straight an wavy lead strips and adapted to connect together said pressure strips while being permitted to vertically move in the holes 0 the straight lead strips.

3. In an accumulator-plate, the combination with a leaden head-piece, of a plurality of vertical alternately straight and wavy lead strips secured with their upper ends on said lea en head-piece and provided with holes, a plurality of elastic supporting strips suspended from said lea-den headiece and adapted to yieldingly compress sai straight and wavv lead strips in the horizontal direction, and a plurality of horizontal cross rods passing through the holes of said straight and wavy lead strips and adapted to connect together said supporting strips while being permitted to vertically move In the'holes of the straight lead strips.

4. In an accumulator-plate, the combination with a head-piece, of a lurality of alternately straight and wavy end strips suspended lrom the head-piece and provided with holes, the straight lead strips being longitudinally corrugated, a plurality of pressure strips suspended from the headpiece and adapted to yieldingly compress the straight and wavy load strips in the hon- I zontal direction, and a plurality of horizontal cross rods passing through the holes of the straight and wavy lead strips and adapted to connect together the pressure strips.

I 5. In an accumulatorlate the combination with a head-piece, o a piurality of vertical alternately straight and wavy lead strips secured with their upper ends on said head. i "and provided with 1191 10- rugated,-a lurahty of diistic pressure strips straig "tjlead strips be longitudinally cor- "suspended om said head-piece and adapted .to yieldingly compress said st ht and wavy lead strips in the horizontal rection, anda plurality of cross rods pass through the ho es of said straight and wavy ead strips I and adapted to connect together said presof vertical alternately straight and wavy lead stri s secured with their upper ends on said le en head-piece and provided with holes, the straight lead strips bein longitudinaliy corrugated, a plurality o elastic supporting stri ssuspended from said leaden head-piece an adapted to yieldingly compress said str ht and wav lead stri s in the horizontal ection, an a lurali y of horizontal cross rods passing throu h the holes of said straight and wavy lea strips and adapted to connect together said supporting strips while being ermitted to vertically move in the holes 0 the straight lead stri s.

Iii witness whereof I have hereunto set my hand in presence of two witnesses.

MIOHAIL MARGULIS.

Witnesses Hnnnr HASPER, WOLDEMAR HAUPT. 

